Welcome to Zonkiies Big Collection Lib!

Get the deb key:

Note that sourceforge has changed URLs sometimes ago, so the datapacket.dl.sourceforge.net links doesn't work now.
wget -O - http://sourceforge.net/projects/zonkiies-big-collection-lib/files/deb/apt/key/deb.gpg.key | apt-key add -
add repository to /etc/apt/sources.list.d/zonkiie.list:
deb https://sourceforge.net/projects/zonkiies-big-collection-lib/files/deb/apt/ stable main

For reference, this was the old location:
wget -O - https://datapacket.dl.sourceforge.net/project/zonkiies-big-collection-lib/deb/apt/key/deb.gpg.key | apt-key add -
add repository to /etc/apt/sources.list.d/zonkiie.list:
deb https://datapacket.dl.sourceforge.net/project/zonkiies-big-collection-lib/deb/apt stable main